What is the critical angle for total internal reflection when light travels from glass to water

For total internal reflection to occur, light must travel from an optically  dense to a less dense medium,

From the snell law, sinθ₁ .n₁  = n_2. Sinθ₂

The refractive of water is 1.333 =n2, the refractive index of glass, n2=  1.474( pyrex)

Θ₁=? And θ₂=90

Θ₁ = sin^-1 [(n_2./ n₁) * sin90 ,

Θ₁ = sin^-1 [(1.333/1.474) * sin90 =65°